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Re: Fedora utrace changes break PPC GDB
- From: "Ulrich Weigand" <uweigand at de dot ibm dot com>
- To: roland at redhat dot com (Roland McGrath)
- Cc: gdb at sourceware dot org
- Date: Fri, 9 Nov 2007 20:21:21 +0100 (CET)
- Subject: Re: Fedora utrace changes break PPC GDB
Roland McGrath wrote:
> > Thanks for the quick fix! I'll verify that it works for me as soon as
> > the patches are included in Fedora. (I'm assuming it is too late for
> > them to get into Fedora 8 at this point, right?)
>
> Yeah, that ship sailed a few days ago. But there is kernel built already
> (koji.fedoraproject.org) that will be an f8-updates kernel soon, I'd guess
> within a couple of days.
Thanks again! I've now verified that the ptrace interface works as expected
again with kernel-2.6.23.1-48.fc8. Unfortunately I ran in a number of separate
issues that caused watchpoints to remain broken on my test system:
- A GDB PPC regression that came in recently.
This is fixed by http://sourceware.org/ml/gdb-patches/2007-11/msg00202.html
- A Cell/B.E. specific kernel bug (the DABRX register is not enabled).
I've got a hack to work around this, and am currently working with the
Cell kernel team to get a proper fix upstream.
With those two problems fixed in addition to the utrace fix, the watchpoint
related test cases in the GDB test suite pass again.
Bye,
Ulrich
--
Dr. Ulrich Weigand
GNU Toolchain for Linux on System z and Cell BE
Ulrich.Weigand@de.ibm.com